Pushed by Lord Dubs, who fled the Nazis to Britain as a child, the amendment agreed to accept children who have already made the perilous crossing to Europe - not just those in camps near the Syrian border.

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Other youths who've come from the Calais Jungle this week have had family in Britain. That means they came under the separate 'Dublin Regulation'.

Campaigners gathered on Friday with balloons and 'Refugees Welcome' banners at the immigration centre in Croydon, South London, to defend the youngsters after Tory attacks.

Screens are now up to stop the youths being photographed after Tories questioned their ages and one, David Davies, called for dental checks.

The Home Office dismissed the call saying such checks were inaccurate.

But today it faced claims that it rejected an offer of help with age checks two months ago.

David Simmonds, chairman of the Local Government Association's asylum, refugee and migration taskforce, told the Sunday Telegraph: "We made the offer in August and the Home Office didn't take it up at the time.

"They only started asking for social workers with age assessment experience on Friday."

A coach carrying migrant children arrives at Lunar House in Croydon (Image: PA)

Screens are now being used to keep new arrivals hidden from public view in Croydon.

On the latest arrivals, Bishop Jonathan Clark, spokesman for Citizens UK, said: "It's great to see government acting on what Citizens UK have been calling for.

"Of course this is just a very small proportion of the unaccompanied children out there and less than 1% of the total number of people in the Calais camp now, the vast majority of whom will be claiming asylum in France as they should."

The Calais Jungle camp is being bulldozed tomorrow (Image: Getty)

The latest arrivals came as demolition teams prepare to move into "the Jungle" tomorrow to clear the estimated 6,500 inhabitants who will be relocated to reception centres across France.

Dover Conservative MP Charlie Elphicke said the camp must never be allowed to re-emerge.

He said: "The Jungle must be fully dismantled - never to return. This time they need to see it through. We must end the Calais migrant magnet."